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Finding the Fourth Proportional to 92,644.60, 138,968.42 and 26,086.33

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Solution

The fourth proportional to 92,644.60, 138,968.42 and 26,086.33 is: 39,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,644.60 : 138,968.42 = 26,086.33 : x
  2. Step 2: Convert to fraction form
    92,644.60/138,968.42 = 26,086.33/x
  3. Step 3: Cross multiply
    92,644.60x = 138,968.42 × 26,086.33
  4. Step 4: Simplify right side
    92,644.60x = 3,625,176,063.70
  5. Step 5: Solve for x
    x = 3,625,176,063.70/92,644.60
  6. Step 6: Final answer
    x = 39,129.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.